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Finding the Fourth Proportional to 11,257, 16,885.50 and 3,049

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Solution

The fourth proportional to 11,257, 16,885.50 and 3,049 is: 4,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,257 : 16,885.50 = 3,049 : x
  2. Step 2: Convert to fraction form
    11,257/16,885.50 = 3,049/x
  3. Step 3: Cross multiply
    11,257x = 16,885.50 × 3,049
  4. Step 4: Simplify right side
    11,257x = 51,483,889.50
  5. Step 5: Solve for x
    x = 51,483,889.50/11,257
  6. Step 6: Final answer
    x = 4,573.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.